Aquaculture Antibiotic Use and Animal Welfare

Antibiotic use in aquaculture reflects underlying welfare problems from disease and poor conditions, and creates risks for both fish welfare and antimicrobial resistance.

Key Facts

Aquaculture uses a significant proportion of globally produced antibiotics, particularly in Asia
High antibiotic use is a symptom of disease pressure driven by overcrowding and stress
Antibiotics treat disease but do not address the underlying welfare conditions that cause it
Antimicrobial resistance (AMR) from aquaculture has implications for human and animal health globally
Welfare improvements — lower stocking density, better water quality — reduce antibiotic dependence

Welfare Considerations

Antibiotic use in aquaculture is both a welfare indicator and a welfare concern. High use signals disease pressure caused by stressful overcrowded conditions. Antibiotics treat the symptom but leave the welfare problem intact. Animals repeatedly treated for disease in poor conditions experience chronic stress throughout their lives. Welfare-focused aquaculture reduces antibiotic dependence by preventing disease through good management — a win for animal welfare and antimicrobial resistance simultaneously. Transparency in antibiotic use is essential for informed consumer choice.

What You Can Do

Choose aquaculture products certified by schemes requiring low antibiotic use
Support transparency requirements for antibiotic use disclosure in aquaculture labelling
Donate to aquaculture reform organisations working on disease prevention
Raise awareness about the link between overcrowding, antibiotic use and fish welfare